/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/TransferBoneWeights.h
Find the closest point on the surface of the source mesh and return the ID of the triangle containing it and its barycentric coordinates.
true if point is found, false otherwise
bool FindClosestPointOnSourceSurface ( const FVector3d & InPoint, const [FTransformSRT3d](API\Runtime\GeometryCore\FTransformSRT3d) & InToWorld, int32 & OutTriID, FVector3d & OutBary )